San Antonio Weather Forecast

    • 28
    • 52

    Increasing Clouds

    • 28
    • 50

    Mostly Cloudy

    • 19
    • 46

    Chance Snow Showers

    • 8
    • 37

    Chance Snow Showers

    • 9
    • 37

    Mostly Sunny

    • 14
    • 44

    Mostly Sunny

Today 25 Dec Southern San Luis Valley

Mostly sunny with a 10 percent chance of rain Showers. Highs 49 to 56. South Winds 10 to 15 Mph becoming southwest 15 to 25 Mph in the afternoon. Gusts up to 40 Mph.

Tonight 25 Dec Southern San Luis Valley

Partly cloudy until midnight then becoming mostly cloudy. Lows 25 to 31. Southwest Winds 10 to 15 Mph with Gusts to around 35 Mph.

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San Antonio Temperature Statistics

December Temperature

San Luis Valley Regional Airport (29.8 miles)

  • Lowest 5 December, 2025

    0 °F

  • Average December

    27.4 °F

  • Highest 19 December, 2025

    62.1 °F

Climate (2020–Present)

San Luis Valley Regional Airport (29.8 miles)

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  • Average Low 2020–2025

    26.6 °F

  • Average 2020–2025

    44.7 °F

  • Average High 2020–2025

    62.5 °F
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